Elevator-dumping device



July 1, 1930. J. FAIRH EAD I ELEVATOR DUMPING DEVICE 2 sheds-sheet 1Filed Feb. 28, 1929 July 1, 1930. J. FAIRHEAD 'ELEVATOR DUMPING DEVICEFiled Feb. 28, 1929 2 Sheets-Sheet 2 Patented July 1, 1939 V utasssJAMES rnmnnnn, or 'rononro, on'rARIo, CANADA- ELEVATOIt-DUMPING DEVICEApplication filed February 28, 1929. Serial No. 343,454.

cifically in the claims for novelty following a description containingan explanation in detail of an acceptable form of theinvention.

The objects of the invention are to construct an elevating dump bucketin which the operation of dumping the load is simplitied and madeautomatic; to economize 1n the expenditures of time and labour occu,-.

pied in elevating and dulnping a given quantity of material; to reducethe power re-.

quired to operate the elevator by shortening I the distance of traveland emptying nearer the pile, thus preventing crushing and dust,especially in the unloading-of coal and coke, the effect of thedropbeing' elim nated by dumping or unloading the bucket at a veryslight elevation above thepile; to eliminate the necessity of loweringthe coal onto the pile by way of tricklers or chutes commonly used whenthe coal is lowered any dlstance from the top of thestorage bin; toempty the elevating bucket at any convenientwposition in the path of itstravel; and genorally to provide an elevating dump bucket, simple anddurable in its constructional features and eflicient in operation.

In the drawings, Figure l i's a plan view of'the invention.

' Figure 2 is a vertical sectional view showing the unloading mechanismin' operation. Figure 3 is a detail section'vlew of the unloading doors1n thelr closed position.

Figure 4. is a diagrammatic elevatioiial view of this invention inoperation.

Figure 5 is a front elevational view of the bucket.

Figure 6 is a front elevational view show? 7 g I ventzthe material fromcollecting in the cor ing the bucket in its unloading position. 7

Like numerals of reference indicate'core p ing 29 when the bucket isbeing dumped responding partsin the various figures.

In most mechanlsms 1n use at the present tune for elevating andunloading coal into amount of coal is broken or ground up in the topofthe pile of coal in' the bin, when the bucket automatically opens todeliver storage bins or silos in coal yards, it is neei essary toelevate-the coal to the top of the bin or' silo before allowing it tofall into 5 same Thecoal is usually lowered from the top of the bin orsilo" by way oftricklers or opposed chutes. An objection to this Imethod is that considerable time and power is required to'elevate thecoalto the top of the bins before dumping,and a considerable" this way,resulting in undesirable coal dust:- In my invention it is necessary toonly elevate the bucket to a distance slightly beyond v the coal into ahopper'and thence to thejbin or silo at this level byway of a chute,thus eliminating the necessity of trickle rs and greatly reducing thetime required I in 'elevat ang and unloading. 1. Referring tothedrawings, thev numeral J l 10 indicates a rectangular ;receptacle orI V bucket having end walls 11,-the front wall 12, the rear wall. 13,and the slanting bot}. tom '14. ,The bucket is reciprocally mounted in averticalfframe22 consistingiof the frontcorner posts 23; and therearicorner post 24. The corner posts 23'and 24 are? preferably situatedat the ends of the bucket Y and the front corner posts 23 areso arrangedthat they will. project slightly beyondlthe" Z w front wall 12 of, thebucket, as at 23A.. i

. Vertical cleats or strips 25 are secured on each end wall 11 andadjacent-each corner. The cleats-25 lie in'a' groove 26 formed by theundercut strip 27 secured to the corner posts 23 and 242. Thecleats 25are adapted t to reciprocate in the groove 26 as the bucket is raised orlowered in the framework-22 and serves to retain thebucket 10 in its:proper path. A rectangular opening 29 is,

formed in the lower portion of the front wall 12 iv and eXt'endsto-apoint as at 30 adjacent each end. Guide plates 30A are situated at eachof the front corners topreners and to guide the material to theopenoremptied. A door 31 is hingedly mounted The door 31 is adapted toswing by its own weight and close the upper portion of the opening 29. Asecond door 33 is pivotally 'mounted at its lower edge to the floor 14of the bucket 10 and adjacent the front edge thereof as at 34. The door33 in its closed position closes the remaining portion of the opening 29and has extensions or cleats 35 secured adjacent its upper edge andextend ing therebeyond adapted to bear on the outsition. At each pointwhereit may be deforce the'door 33 to aclosed position.

sired to dump or unload the bucket 10, a gap 40 is formed in the tracksor angles 36. At the upper end of each section of track 36 between eachgap 40, the track 36 is bent outwardly as at 41 to form a guide 42 whichserves to guide the roller 37 back to the track 36 when the bucket islowered below the gap 40.

Thus, when the bucket 10 is raised to this position, the door 33 withthe roller 37 pivots about the hinge 34 to an open position with thedoor 33 in line with the slantini.v floor '14. In this position thematerial in the bucket will empty through the opening 29 forcing thedoor 31 to swing outwardly to an open position. After the bucket isemptied, the door 31 swings to a closed poistion and as the bucket islowered below the gap 40, the rollers 37 take a position bearing againstthe angles or tracks 36 and 45 is a hopper into which the material isdumped from. the bucket 10. An apron or chute 46 is situated in theupper side of the hopper 45 and adjacent the gap 40. The

door 33 when it swings open at this position, rests on the apron 46 asat 47 and any ma terial in the bucket 10 is carried by way of the door33 and apron 46 into the hopper 45. A vertical'fla-nge 46A is formed ateach side of the apron 46 to prevent the material from spilling over thesidesof the apron. For the purpose of closingany of the gaps 40 so thatthe bucket 10 may be elevated above this point without emptying, a door48 pivotally mounted at its upper edge as at 49 adjacent the lower endof the next section of track36, carries a strip 48A adjacent each sidethereof which falls in line with the tracks 36 when said door 48 is inits'closed position so that the rollers 37 on coming to a gap 40 closedby the door 48 will bear on the strips 48A until it reaches 26c nextsection of track 36 above the gap In Figure 4 I show the unloadingbucket in operation. 50 are silos or bins in which it is desired tostore coal or the like. The framework 22 in which the buckets are raisedor lowered'is located adjacent the silos 50.

In this case I show two buckets with their respective framework 22 inoperation and serving two silos or blns each. With this each gap whendesired. A pivoted spout or chute 52 is mounted under each hopper 45 andis adapted to lead into adjacent openings 53 formed in each bin 50 andat this level. Thus by means of the pivoted spout or chute 52, the coalor other material may be delivered at'the openings 53 in either of thesilos 50.

What I claim is: 7

An elevator dumping device having means for elevating same andcomprising a rectangular bucket opened at the top and having an openingin the lower portion of .one side, a slanting floor in said bucketconverging towards said side opening, a door hingedly mounted above saidside opening and adapted to swing by its own weight and close a portionof said opening, a second door hingedly mounted at the bottom of saidbucket and adapted to swing to a closed position over the remainingportion of said opening and having extensions at its upper edge adaptedto overlap said first named door, a vertical frame consisting of fourcorner posts suitably braced and forming a reciprocal mounting for saidbucket, a projecting track on adjacent sides of two of said corner postssituated adjacent said side opening in said bucket, rollers rotatablymounted on the outside of said second named door and adapted to bearagainst said projecting track to retain said door in its closedposition, gaps in said tracks at predetermined spillway positions, bentportions at the upper end of each length of track forming a guideadapted'to receive and guide said rollers back to said tracks when saidbucket is lowered below the position for emptying at any of saidspillways, and pivoted doors at each of said spillways adapted to pivotto a closed position and lengths of track secured thereon positioned tobridge said gaps.

Signed at the city of Toronto, this 13th dayof February, 1929.

JAMES FAIRHEAD.

